DS32EV400SQX NSC [National Semiconductor], DS32EV400SQX Datasheet
DS32EV400SQX
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DS32EV400SQX Summary of contents
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DS32EV400 Programmable Quad Equalizer General Description The DS32EV400 programmable quad equalizer provides compensation for transmission medium losses and reduces the medium-induced deterministic jitter for four NRZ data channels. The DS32EV400 is optimized for operation up to 3.2 Gbps for both ...
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Pin Descriptions Pin Name Pin # I/O, Type HIGH SPEED DIFFERENTIAL I/O IN_0 CML IN_0– 2 IN_1 CML IN_1– 5 IN_2 CML IN_2– 9 IN_3 CML IN_3– 12 OUT_0 CML ...
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... NSID Package Type, Qty Size DS32EV400SQ 48–pin LLP ( 0.8 mm, 0.5 mm pitch, reel of 250 DS32EV400SQX 48–pin LLP ( 0.8 mm, 0.5 mm pitch, reel of 2500 Data input/output (bi-directional). Internally pulled high. Clock input. Internally pulled high. Chip select. When pulled high, access to the equalizer SMBus registers are enabled. When pulled low, access to the equalizer SMBus registers are disabled. Please refer to “ ...
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Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ( CMOS Input Voltage CMOS Output Voltage CML Input/Output Voltage Junction temperature Storage temperature Lead ...
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Symbol Parameter CML RECEIVER INPUTS (IN_n+, IN_n-) V Source Transmit Launch Signal TX Level (IN diff) V Input Threshold Voltage INTRE V Supply Voltage of Transmitter to DDTX EQ V Input Common Mode Voltage ICMDC R Differential Input Return Loss ...
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Symbol Parameter SIGNAL DETECT and ENABLE TIMING t Input OFF to ON detect — SD ZISD Output High Response Time t Input ON to OFF detect — SD IZSD Output Low Response Time t EN High to Output ON Response ...
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Electrical Characteristics — Serial Management Bus Interface Over recommended operating supply and temperature ranges unless other specified. Symbol Parameter SERIAL BUS INTERFACE DC SPECIFICATIONS V Data, Clock Input Low Voltage IL V Data, Clock Input High Voltage IH I Current ...
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System Management Bus (SMBus) and Configuration Registers The System Management Bus interface is compatible to SM- Bus 2.0 physical layer specification. The use of the Chip Select signal is required. Holding the CS pin High enables the SMBus port allowing ...
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Name Address Default Type Bit 7 0x00 0x00 RO Status 0x01 0x00 RO Status Status 0x02 0x00 RO Enable/ 0x03 0x44 RW Boost ( Enable/ 0x04 0x44 RW Boost ( 0x05 0x00 RW Signal Detect 0x06 ...
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FIGURE 1. Test Setup Diagram FIGURE 2. CML Output Transition Times FIGURE 3. Propagation Delay Timing Diagram FIGURE 4. Signal Detect (SD) Delay Timing Diagram 10 30031927 30031937 30031901 30031902 ...
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FIGURE 5. Enable (EN) Delay Timing Diagram FIGURE 6. Simplified Receiver Input Termination Circuit FIGURE 7. SMBus Timing Parameters 11 30031903 30031907 www.national.com 30031906 ...
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DS32EV400 Functional Descriptions The DS32EV400 is a programmable quad equalizer opti- mized for operation up to 3.2 Gbps for backplane and cable applications. EQUALIZER BOOST CONTROL Each data channel supports eight programmable levels of equalization boost. The state of the ...
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SIGNAL DETECT The DS32EV400 features a signal detect circuit on each data channel. The status of the signal of each channel can be de- termined by either reading the Signal Detect bit (SDn) in the SMBus registers (see Table 1) ...
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DS32EV400 Applications Information UNUSED EQUALIZER CHANNELS It is recommended to put all unused channels into standby mode. GENERAL RECOMMENDATIONS The DS32EV400 is a high performance circuit capable of de- livering excellent performance. Careful attention must be paid to the details ...
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Typical Performance Eye Diagrams and Curves Figure 8. Equalized Signal (40 In FR4, 1 Gbps, PRBS7, 0x07 Setting) Figure 10. Equalized Signal (40 In FR4, 3.2Gbps, PRBS7, 0x07 Setting) Figure 12. Equalized Signal (32 In Tyco XAUI Backplane, 3.125 Gbps, ...
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Physical Dimensions 48-pin LLP Package ( 0.8 mm, 0.5 mm pitch) www.national.com inches (millimeters) unless otherwise noted Order Number DS32EV400SQ Package Number SQA48D 16 ...
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Notes 17 www.national.com ...
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